What would you do?..

[whiteythepimp]

As of right now I ordered a system for post intercooler injection.. I'm strongly thinking about running a second system for pre turbo.. But I want to use a smaller nozzle.. The pre turbo set up I want to run specifically to cool the charge inside the turbo.. But I also want to try to avoid puddling.. I mean if it's an unavoidable situation, I dont mind having to buy a new intercooler core every season..

I've done some research and found out that running pre turbo obviously shortens the life span of the turbo and intercooler.. Hense why people dont run a front mount.. And besides the gains you recieve from either individually compared to the gains you recieve from both, doesnt account dollar for dollar.. Why spend 800 on an FMIC when you turbos life spans gunna be cut in half and you can just save that 800 for another turbo.. Atleast, like i said, this is what I found doing research..

Now with all of that out of the way.. I'm looking to keep the air charge as cool as possible.. Now with the meth post intercooler i'm fine on.. I also want to run a secondary system.. But it's a toss up between pre turbo or direct manifold.. What I mean by direct manifold is.. I have an SBR Intake Mani w/ the nitrous bungs tapped on the underside.. Would it help me to run smaller nozzles directly into the runners there, or go pre turbo?.. Only reason I was thinking about running them through the nitrous ports on the manifold is because im going to be running 35 lbs for d.d... And keeping the internal manifold temps down will help yield my non explosive ending to the manifold.. But by dumping straight meth into the runners of the manifold will it cause internal problems with the motor?... (BTW i'll be running a meth mix of about 75/25 or 80/20 havent tested the yields of either yet..)

What would be the effects of we'll say: (nozzles sizes as per Snow Performance)

running a 60/ml nozzle pre turbo and a 375/ml post intercooler??..

running a 225/ml post intercooler and 4x 60/ml nozzles into the manifold??..

running a 60/ml pre turbo, a 175/ml post intercooler, and 4x 60/ml nozzles into the manifold??..

BTW i'm running a SBR G60, SBR FMIC Race core, Blow Thru set up, SBR Intake Manifold w/ spacer.. Fully built block, Full bolt on besides stock 1g throttle body

 

[dsm-onster]

A comprehensive investigation was done on "wet compression", pre-comressor injection, and there was only a 1% improvement in heat rate (compressor efficiency). There was however a 9% improvement in output which translates into compressor flow for combustion engine turbomachines. So, Keep your intercooler.

Personally and IDEALLY, some from my experience and some from my research and other's results, I'd run water/meth mix: a fine nozzle pre turbo, a VERY fine nozzle pre intercooler, and another nozzle at the throttle body large enough to guarantee plenty of water enters the combustion chamber to slow the burn rate properly.

But, that's a busy engine bay. And ideals are not what I'm after, so I'd stick with the water/meth mix and let the meth alone do good aircharge cooling and do away with all the nozzles except for the throttle body nozzle. And I'd add the compressor inlet nozzle when I reach the limit of my compressor. Remember 1% heat rate improvement but 9% improvement in output. My entire intake manifold and HEAD is cold to the touch after a hard run with water/meth injection just at the throttle body. And I can boost to oblivion with no knock on any "small" turbo. My FMIC guarantees a consistantly cool charge. My 60-1 was fine with 30+ psi and water/meth TB injection alone using pump gas.

 

[turboglenn]

Seriously, did you not read the thread about no FMIC and meth tsting i did recently? You can't run "no intercooler" or at least not have any good performance without it, even with water injection

The puddling doesn't wear out intercoolers, it can cause you to blow it apart from methanol fumes if they get lit from a slight backfire and blow it apart. Look at the thread below this, read it, read the links in it... EVERYTHIHG you should want to know abouit this has been covered by Me and all the people who participated in the thread. Also, you'll find that one guy has went 70k miles with pre turbo injection (in one of the links) read and read a lot. You can do it if you want, but i proved through data logs and hardcore testing and running of the engine with a lot of secondary equipment for the tune and it was not worth it!

EDIT: re-reading your post, 35 psi wil not blow up your manifold either.. you will blow your rings,a whole in the piston etc.. but the manifold isn't coming apart, the fast and the furious was not an educational program

 

[whiteythepimp]

but the manifold isn't coming apart, the fast and the furious was not an educational program

^^^^^+1 for that

But 35 lbs in a manifold that someone else welded... Were they thinking about there own dsm when they welded it??... And even if machined.. Was the machine thinking about there dsm when it welded it??...

 

[Joesmoke]

Adding any injection into the calibration process throws monkey wrenches into the works, Good gains, but you need to throw out some old ideas, and try new things. Really, just keep it simple to start. You would be amazed what you can accomplish with one M15 nozzle pre TB, and a progressive system. That will keep you busy enough.

I cant speak for water or water mix, only on injecting straight meth. Some of the best results come when its injected in a hot airstream, and given time to vaporize. Then you have a combo effect of charge cooling and octane / slow burning fuel effects/leaning out the fuel injectors.

Injecting meth into a cool stream (or direct port) will change this and you end up injecting more liquid and less vapour. Now you're calibration process has changed as its more centered around calibrating an engine running more on straight methanol...kinda sorta

Bottom line, keep it simple. You will chase your tail if think too complicated out of the gate.